Recent content by n3wb

Thanks for the heads up.

thank you for letting me know What if I strap 4 of those together with expanders? By how much increase in distance do you think that will do ?

Greetings, I am planning to build a laser pointer to be used as a signalling device. Ie in the woods/camping/etc I do not own a laser currently and i have never built one either, hence my set of questions. The goal that i am trying to achieve is having a wide/thick enough beam to be...

Thank you guys for your input I apologize, by normal beam I meant a beam with no expander. My budget is around 800. I was also wondering how effective would it be if I get 4 cheaper lasers and strap them together to make a wide beam.

Greetings, I have been reading this forum for about a few months, trying to learn about lasers, specifically about building one (in my case 2). I need to build a laser that will be seen 2 km away when the operator is pointing it up, basically as a signal. I have seen a few beam expanders and...